Window-ventilator



v W.S ARNWEBERH WIND VENTILATOR.

No. 532,487. Patented Jan. 15, 1895.

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UNITED STATES PATENT OFFICE.

WILLIAM SOHARNWEBER, OF ST. LOUIS, MISSOURI, ASSIGNOR OF ONE-HALF TOGEORGE BAKEWELL, OF QUINCY, ILLINOIS.

WINDQW-VENTILATOR.

SPECIFICATION forming part of Letters Patent No. 532,487, dated January15, 1895. Application filed September 10, 1894. Serial No. 522,640- (Nomodel.)

To all whom it may concern.-

Be it known that I,W1LLIAM SOHARNWEBER, a citizen of the United States,residing at the city of St. Louis, State of Missouri, have invented acertain new and useful Improvement in Window-Ventilators, of which thefollowing is a full, clear, and exact description, reference being hadto the accompanying drawings, forming part of this specification,wherein- Figure 1 is a sectional view through a window, showing theapplication of my improved ventilator thereto. Fig. 2 is a detailed viewof the main frame of my ventilator. Fig. 3 is a detail view of thedraft-regulating slide. Fig. 4 is a detail View of the draft-plate. Fig.5 is a detail View of a frame which secures the weather-strips andwire-mesh to the main frame. Fig. 6 is a detail view of the manner ofsecuring the weather-strip to the ventilator. Fig. 7 is a detail view ofthe deflector plate bracket and apiece of the deflectorplate; and Fig. 8is a detail of one of the springs.

This invention relates to a new and useful improvement inwindow-ventilators, of that class in which the draft-openings are formedin a suitable frame, which frame extends the width of the window and isheld in place by the lower sashimpinging thereupon.

Suitable means are provided on the frame to regulate the draft-openings,and in front of said openings is arranged a deflector-plate, whichdirects the incoming air upwardly, so that, should the ventilator beused when the weather is cold, the incoming cold air will create acirculation in the room.

In the drawings, A indicates the main frame, which is formed with alongitudinal opening or'slot, which slot is surrounded by a project ingflange a on the inner face of the frame. Introduced in the slot, is thedraft-regulator B, which bears against the flanges a, and which frame Bis of a length sufficient to permitmovement in the slot in themain-frame, so that its draft-opening b can be caused to register withsimilar openings 0 in a frame 0, or said frame B may be movedlongitudinally of the slot so as to entirely closethe openings in theframe 0. A suitable handle B is preferably placed upon the frame B, bywhich the same. may be moved longitudinally. The frame 0, beforereferred to, is longer than the frame B, and has no longitudinalmovement in the slot of the frame A.

Springs D are mounted on the frame A in some suitable manner, and bearupon the frame C so as to hold it against the frame B, and press frame Bagainst the flanges a surrounding the slot of the main frame. The objectof {these springs is to yieldingly hold the frame 0 against the frame B,so that if expansion should take place, due to dampness or other causes,neither of the frames would bind, and frame B could still be operatedeasily. Another function of springs D, by pressing against frame 0, isto compensate for any irregularity between the two frames, which mightbe due to the warping of either of them.

The back of the frame A is faced with a wire-gauze E, which preventsforeign particles, such as soot, &c., from passing through theopenings 1) and c, and which forms a chamber behind the frame 0 fromwhich the air is drawn through the opening.

The main frame A is formed with a groove in its side edges, into whichis received one side of a piece of weather-stripping F, whichweather-stripping is turned back upon the two brackets I, which areformed with a latorally-projecting fiange'i, which flanges at the upper,outer corner form an eye, into which is received the rolled edge j ofthe deflectorplate J, said deflector-plate being held in posi- 1. In awindow-ventilator, the combination I with a main frame, slottedlongitudinally, of a yielding ventilator-plate located within the slotof the main frame, and a longitudinally movable ventilator plate, alsolocated within the slot of the main frame, which longitudinally movableventilator-plate regulates the passage of air through the yieldingventilator plate, substantially as described.

2. In a window-ventilator, the combination with a main frame, slottedlongitudinally, of a flange along the inner edges of the slot, a movableventilator-plate which rests against said flanges, 'a stationaryventilator plate, which is behind the movable ventilator plate and holdsthe same in position, and springs on the main frame for yieldinglyretaining the stationary ventilator-plate in position, substantially asdescribed.

- with a main frame having a longitudinal slot formed therein,ventilator-plates which are yieldingly held in position in said slot,and a deflector-plate which is mounted upon the main frame in front ofthe slot, substantially as described.

In testimony whereof I hereunto affix my signature, in presence of twowitnesses, this 31st day of August,'1894.

WILLIAM SCI'IARN WE BER.

Witnesses:

F. R. CORNWALL, HUGH K. WAGNER.

